A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5945-01-302-8959
NSN 5835-01-116-2369
NSN 5905-01-076-7468
NSN 6220-01-439-7474
NSN 5895-00-265-0159
NSN 5985-01-362-4194
NSN 5895-01-364-2940
NSN 5925-00-444-0595
NSN 7035-00-104-7613
NSN 5905-01-537-3185
NSN 5965-01-223-9218
NSN 5930-00-579-1009